Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Probabilistic Assessment of life Time for Gas Pipe Lines

통계적 방법을 통한 가스배관의 잔여수명 예측

  • 최병학 (강릉대학교 금속재료공학과) ;
  • 이상호 (강릉대학교 정보통계학과) ;
  • 김영표 (한국가스공사 연구개발원 배관연구센터) ;
  • 김우식 (한국가스공사 연구개발원 배관연구센터) ;
  • 고영태 (한국가스공사 연구개발원 배관연구센터)
  • Published : 2004.04.28
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Abstract

A study on the probabilistic methodology for the estimation of the remaining life of Pressurized pipelines containing active corrosion defects is presented. This reliability assessment is earned out using extream value distribution of the corroded defects instead of already published failure perssure moded like NG18 or ASME B31G. The failure probability of pipelines depends on the number of corroded defects. and it could be calculated directly as the area exceeded a defined L V(Limited Value of corrosion depth). The remaining life of pressurized pipelines can also be estimated by the PDF of extream value distribution as calculating the exceeded area with a defined failure probability.

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